Perhaps you should try some spelling variations:
sach tham » sach nha
sach thu » sach thue, sach thieu, cach thuc
thanh vi » hanh vi, thanh va, thanh ve
tang van » dang van, hoang van, trong van
hieu va » lieu va, hieu qua
van hoi » van hoa, van hoc, van hoe
va cam » va cham, va cac, va cao
xuc va » tuc va, luc va, xac va
vi cua » vai cua, di cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach thu) or (sach tham)) tang van hoi. hieu va cam ((xuc va) OR (duc va)) thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach thu) OR (sach tham)) tang van hoi. hieu va cam ((xuc va) OR (duc va)) thanh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach thu) or (sach tham)) tang van hoi. hieu va cam ((xuc va) OR (duc va)) thanh vi cua te*".